bootchartd: depends on tar -z functionality

[Denys Vlasenko]

On Wednesday 23 October 2013 15:57, Thomas De Schampheleire wrote:
> Hi,
> 
> The bootchartd applet writes its results with 'tar -z' which only
> works if the system has a full 'tar' and 'gzip', or has busybox tar
> but with gzip functionality enabled (FEATURE_SEAMLESS_GZ).
> 
> Currently there is no check on this whatsoever, and bootchartd simply
> fails to write its data on the filesystem.
> 
> What is the best approach here?
> 
> 1. let bootchartd depend on FEATURE_SEAMLESS_GZ: trivial change, but
> hides bootchartd from config if this feature is not enabled; can be
> confusing. Also, if the user has a real non-busybox tar that supports
> '-z' this is not needed.
> 
> 2. let bootchartd select FEATURE_SEAMLESS_GZ: trivial change, but
> makes busybox include features the user is not really aware of. Also
> not needed in case there is a full 'tar -z'.
> 
> 3. change bootchartd to write uncompressed data
> 
> 4. change bootchartd to check if compression is possible. If yes, do
> it, if not then write as plain tar.
> 
> 5. other options?

5. do nothing? Maybe emit a #warning... I'll do this.